Flue-cutter.



PATENTED 001223, 1906. W. MccoRMIoK. PLUB CUTTER.

APPLICATION 4FILED JUNE 1s, 190e.

A Troie/VE YS co., wAsmNaraN, n. c.

UNITED STATES PATENT OFEIGE.

FLUE-CUTTER.

No. 533,843. y

Specification of Letters Patent.

Patented oct. 23, 1 90e.

Application iled'ilune 18,1906. Serial No. 322,259.

To all whom t may concern:

Be it known that I, WASHINGTON MCCOR- MICK, a citizen of the United States, residing at Hillyard, in the county of Spokane and 5 State of Washington, have -invented anew and useful Fine-Cutter', of which the following is a specification.

`s inventionhas relation to an improved iue and pipe cutter; and it consists in the `novel construction and arrangement of its parts, as hereinafter shown and described.

The object of the invention is to provide a new and improved liiue or pipe cutter which is simple and durable in construction, very effective in operation, and may be readily applied to and disconnected from a iiue or pipe and when actuated` is adapted to quickly cut the flue or pipe at the desired point.

` The further object of the invention is to so mountthe flue-cutting bit that in engaging the iiue or pipe it is first projected through the said pipe radially with relation4 to the same and when in extended position is then carried around by a sleeve to which the power is applied. As the flue-cutting bit is projected radially through the pipe, it is seated upon a pin which extends through the vsaid bit in a transverse direction with relation thereto, so that the nsaid bit is firmly seated and will have no tendency to slip within its retaining member as a consequence of the strain in passing through the pipe in the initial incidents.

In the accompanying drawings, Figure 1 showing the cutter in section therein with the bit withdrawn. Fig. 2is a side elevation of the flue-cutter. Fig. 3 is a transverse sectional view ofthe fine-cutter, showing the position of the posts when the bit is withdrawn. Fig.l 4 is a transverse sectional view of the flue-cutter, showing the position of the.

posts when the bit is extended. Fig. 5 is a side elevation of the sleeve and clutch disconnected; and Fig. 6 is a longitudinal sectionalview of a fiue, showing the cutter in section therein with the bit extended.-

The sleeve 1 is cylindrical in form and is preferably tapered at its inner end, as at 2, and is provided at its outer end with the enlarged head 3. This head is provided at its outer end with the'shoulder 4, which extends in alinement with the longitudinal axis of the sleeve. The bore 5 of the Sleeve 5 is eccentrically disposed therein and extends within a suitable distance of the inner end is a longitudinaly sectional view of a flue,v

thereof and isprovided at its outer end'with the annular enlargement 6, whereby a shoulder 7 is formed. The sleeve is provided with a segmental slot 8, which is at right angles to the longitudinal axis of the sleeve and is adapted to receive the flue-cutting bit, hereinafter described. At the inner end ofthe sleeve an opening 9 of suitable diameter communicates with 'the eccentrically-disposed bore of the sleeve and is disposed centrally with relation thereto. The mandrel 10Yis iitted accurately to the bore 5 of the sleeve and is adapted to describe partial rotation therein. Said mandrel is provided with the enlarged portion 11 to fit the enlarged bore 6 of the sleeve. Said mandrel is provided at its inner end with a bore 12, which is smooth and extends concentrically therewith. The end of said the internal screw-thread 13. The bore 12 extends from the end of the mandrel 10 across the transverse opening 14, which'is adapted to receive the flue-cutting bit 15. Said bitis provided with the usual cutting edge 16 and at lan intermediate point'with the perforation 17, which is adapted to register with the bore 12 when the bit 15 is in position upon the mandrel 10.` l

The screw 18 passes through without engaging the bore 9 of the sleeve, and its threaded portion 19 engages the thread 13 of the mandrel. snugly within the bore 12 of the mandrel and passes through the opening v17 of the fluecutting bit 15. vThus the said bit is positively seated uponvthe said pin 18. The clutch member 19 is provided with an opening which is adapted to receive the enlarged head 11 of the mandrel 10. Any suitable bore is provided'withy The inner end of thescrew fits means (not shown) maybe provided for clutch member. The said clutch member with a shoulder v20, which is adapted to engage the shoulder 4 of the sleeve 1. When the sleeve 1 has been inserted in the iue or pipe and when the said sleeve is turned by the means described, the eccentric disposition of the bore 5 causes the cutting-bit to move radially with relation to the pipe and penetrate the same. As the sleeve 1 turns independently of the mandrel 10 until the bit 15 comes in contact with the end of the slot 18, the said bit is moved. strictly in a radial direction with relation to-the flue. Thereafter the bit 15 is rotated with the sleeve, as will be understood. One rotation` IOO of the implement su'flices to cut the ilue or l From the foregoing'description, taken in connection with the accomp anying drawings, the construction, operation, and advantages of this invention will be apparent.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a iiue or pipe cutter the combination of a sleeve vhaving an eccentrically-disposed bore and a segmental opening entering said bore, a mandrel located in said bore, said mandrel having at its inner end a centrallydisposedsmooth bore with a threaded portion at the end of the mandrel, a screw passing through the end of the sleeve and having a threaded surface adapted to engage the threaded bore of the mandrel, the inner end smooth portion of' said screw being smooth and fitting snugly within the smooth portion of the mandrelbore, an opening extending laterally through the mandrel and intersecting the bore thereof, a {lue-cutting bit located in' said opening and having a smooth bore which registers with the bore of the mandrel and receives the of said screw, the end of said bit working within the segmental opening of the sleeve, and a means vfor rotating said sleeve.

In testimony that I claim the foregoing as my own I have hereto aHixed my signature in the presence of two witnesses.

WASHINGTON MCCORMICK.

Vitnesses:

M. J. GUIRY, GEO. M. DIXON. 

